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Long-Term Debt and Liquidity Matters - Estimated Fair Value of Long-Term Debt (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Estimated fair value of long-term debt, including current maturities |  |
Carrying Amount | $ 8,414,372 | $ 7,791,971
Fair Value | 7,057,297 | 6,585,701
APS |  |
Estimated fair value of long-term debt, including current maturities |  |
Carrying Amount | 7,290,851 | 6,793,529
Fair Value | 5,969,892 | 5,629,491
BCE |  |
Estimated fair value of long-term debt, including current maturities |  |
Carrying Amount | 0 | 50,550
Fair Value | 0 | 50,685
Pinnacle West |  |
Estimated fair value of long-term debt, including current maturities |  |
Carrying Amount | 1,123,521 | 947,892
Fair Value | $ 1,087,405 | $ 905,525

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- Definition Amount of short-term and long-term debt and lease obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13,16) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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- References No definition available. + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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